Solid Core and Split Core Adjustable
WARNING
CAUTION
CAUTION
WARNING
Current “Status” Switches
CSS-O, CSS-C; CSP-O, CSP-C
INSTALLATION INSTRUCTIONS
SAFETY
For CSS-O,C ensure that all power sources
are disconnected and locked out before
installation as severe injury or death may
result from electrical shock due to contact
with high voltage wires.
This product is not intended to be used for life
or safety applications.
This product is not intended for use in any
hazardous or classified locations.
INSTALLATION
Make sure that all installations are in compliance with all
national and local electrical codes. Only qualified
individuals that are familiar with codes, standards and
proper safety procedures for high voltage installations
should attempt installation. The current switches will not
require external power, since the power for the current
switch is induced from the conductor being monitored.
The current switch may be mounted in any position using
the (2) #8 x 3/4 in. (19 mm) Tek screws and the mounting
holes in the base or snapped directly on to the 1-3/8 in.
(35 mm) DIN rail (See Figures 1 and 2). Leave a
minimum distance of 1 in. (25 mm) between the current
switch and any other magnetic devices, such as
contactors and transformers.
For applications in which the normal operating current is
below the 0.8/2.0 Amps trip point (See Fig. 3), the
conductor being monitored may be looped through the
sensor 6/12 times giving you a total operating current of
6/12 times the original current.
Example:
A small fan operating at 0.2 Amps can be wrapped
through the sensor 6 times to give you a total
operating current of 1.2 Amps flowing through the
CSS-O-A300-001. Another option is to use CSS-OA200-001.
A small fan operating at 0.2 Amps can be wrapped
through the sensor 16 times to give you a total
operating current of 3.2 Amps flowing through the
CSP-O-A300-001. Another option is to use the
CSP-O-A200-001.
3X
Never rely on the LEDs to determine whether
power is present at the current switch. The
red LED will indicate whether the current is
above the adjustable trip point. The green
LED will indicate whether the current is below
the adjustable trip point.
IMPORTANT
The current switch should be used on insulated
conductors only!
IND.CONT.EQ.
3JHX
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Fig. 1. Sensor placed on DIN rail
62-0242—01
M25289
SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
WARNING
CAUTION
For applications in which the normal operating current is
3X
greater than 250 Amps or for conductor diameters larger
that 3/4 in. (19 mm) in diameter, and external 5 Amps
Current Transformer (C.T.) must be used as shown in
Fig. 4.
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M25290
Fig. 2. Sensor removed from DIN rail
U
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C
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R
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M25291
Fig. 3. Wires through sensors
The secondary of the 5 Amps Current
Transformer must be shorted together before
the power may be turned on to the monitored
device.
INSULATED CONDUCTOR
600:5 RATIO 5A C.T.
EXAMPLE: FOR CURRENTS UP TO 600 AMPS, USE A 600:5 RATIO C.T.
AS SHOWN.
WIRE NUT
M25295A
Fig. 4. Current transformer
Latch Operation
Pressing down on the two (2) side tabs and swinging the
cover open opens the split core current switch as shown
in Fig. 5. Lifting up the latch with a flat-tip screwdriver as
shown in Fig. 6 can also open the unit. Press down firmly
on the cover to close the current switch. An audible “click”
will be heard as the tab slides over the tongue on the
base.
Mating surfaces of the magnetic core are
exposed when the sensor is open. Silicone
grease, present on the cores to prevent rust,
can capture grit and dirt if care is not
exercised. Operation can be impaired if
anything prevents good contact between pole
pieces. Visually check the mating parts of the
core before closing the current sensor.
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Fig. 5. Opening sensor by hand
62-0242—01 2
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M25298
SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
Wiring
Honeywell recommends the use of a 2 conductor 16 to
22 AWG (1.3 to 0.3 mm
copper wire only, for all current switch output applications.
A maximum wire length of less than 98.4 feet (30 meters)
should be used between the current switches and the
Building Management System or controller.
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M25299
Fig. 6. Opening with a screwdriver
NOTE: When using a shielded cable, be sure to connect
When removing the shield from the sensor end, make
sure to properly trim the shield so as to prevent any
chance of shorting. The current switch output terminals
represent a solid-state switch for controlling AC and DC
loads and is not polarity sensitive. The recommended
torque to be used on the terminal block connections is
5.93 in-lbs. (0.67 Nm). The aperture (hole) size of the
current switch is 3/4 in. (19 mm) and will accept a
maximum cable diameter of 350 MCM (17.3 mm). See
Fig. 7 for use as a digital input to a building management
system and Fig. 8 for use as a pilot relay application.
OPERATING SPECIFICATIONS
Max Sensing Current Voltage: 600 Vac
Table 1. Specifications by Product Number.
Core
Product Number
Typ e
Normal
Position
CSS-O-A300-001 Solid N.O. 1.0-250 Amps 0.30 Amps @
CSS-O-A200-001 Solid N.O. 0.50-250 Amps 0.30 Amps @
CSS-C-A300-001 Solid N.C. 1.0-250 Amps 0.15 Amps @
CSP-O-A300-001 Split N.O. 3.0-200 Amps 0.30 Amps @
CSP-O-A200-001 Split N.O. 2.0-200 Amps 0.30 Amps @
CSP-C-A300-001 Split N.C. 3.0-250 Amps 0.15 Amps @
CSP-C-A200-001 Split N.C. 2.5-250 Amps 0.15 Amps @
Adjustable
Trip Point
Output Switch
Rating
200 Vac/Vdc
200 Vac/Vdc
300 Vac/Vdc
200 Vac/Vdc
200 Vac/Vdc
300 Vac/Vdc
300 Vac/Vdc
2
) shielded cable or twisted wire,
only (1) end of the shield to ground at the controller. Connecting both ends of the shield to the
ground may cause a ground loop.
Max. Current
Cont.
Max. Current
for 6 secs.
Max. Current
for 1 sec.
250 Amps 500 Amps 1,000 Amps
250 Amps 500 Amps 1,000 Amps
250 Amps 500 Amps 1,000 Amps
200 Amps 400 Amps 800 Amps
200 Amps 400 Amps 800 Amps
250 Amps 500 Amps 1,000 Amps
250 Amps 500 Amps 1,000 Amps
BUILDING MANAGEMENT
Fig. 7. Digital circuit
DIGITAL INPUT #1
SYSTEM
M25302
DDC CONTROLLER
DI
(STATUS)
DO
(RELAY COIL OR
CONTACTOR)
TRANSFORMER
24 VAC COIL
120 VAC
LINE
RELAY
CONDITIONER
24 VAC COIL
M23933
Fig. 8. Analog circuit
3 62-0242—01
SOLID CORE AND SPLIT CORE ADJUSTABLE CURRENT “STATUS” SWITCHES
Calibration of Adjustable Trip Point
The adjustable current switch has an operating range of
0-200 Amps or 0-250 Amps. Do not exceed! The
adjustable current switch comes with its fifteen-turn
adjustable potentiometer set counter-clockwise to
its maximum position. The adjustable current switch can
monitor Under load, Normal load and Overload
conditions, depending on how it's set. The procedure
below is for Normal load condition for part numbers
CSS-O-A300-001 and CSS-O-A200-001.
Normal loads
With power on and the adjustable current switch on the
proper range, turn the fifteen-turn adjustment
potentiometer clockwise until the red LED turns on
and stop immediately. The adjustment switch is now
tripped. The adjustable current switch Hysteresis (Dead
Band) is 10% of the trip point typically.
TROUBLESHOOTING
Problem Solution
Red LED is on but the
current switch didn’t activate.
Red LED didn’t turn on and
the current switch didn’t
activate
Sensor doesn’t switch at all,
regardless of current level.
Product Number Resistance if switch is open Resistance if switch is closed
CSS-O-A300-001 Greater than 1 Meg ohms Approximately 2 ohms
CSS-O-A200-001 Greater than 1 Meg ohms Approximately 2 ohms
CSS-C-A300-001 Greater than 1 Meg ohms Approximately 12 ohms
CSP-O-A300-001 Greater than 1 Meg ohms Approximately 2 ohms
CSP-O-A200-001 Greater than 1 Meg ohms Approximately 2 ohms
CSP-C-A300-001 Greater than 1 Meg ohms Approximately 12 ohms
CSP-C-A200-001 Greater than 1 Meg ohms Approximately 12 ohms
Disconnect the wires from the current switch output. Measure the resistance across the
contacts with an Ohmmeter. See Table 2 below for resistance readings for a good unit.
Verify that the conductor you are monitoring is above the adjustable trip point. If the
sensor is monitoring less than the adjustable trip point, looping the wire may be
required. See Fig. 3.
Adjustment potentiometer is probably set to its maximum or minimum position. Turn the
potentiometer clockwise all the way and verify if the LED switches from red to green.
Table 2. Resistance Readings For Good Unit.
Automation and Control Solutions
Honeywell International Inc. Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9
customer.honeywell.com
® U.S. Registered Trademark
© 2007 Honeywell International Inc.
62-0242—01 C.H. Rev. 06-07
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